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DK152478C - Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal - Google Patents

Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal

Info

Publication number
DK152478C
DK152478C DK567485A DK567485A DK152478C DK 152478 C DK152478 C DK 152478C DK 567485 A DK567485 A DK 567485A DK 567485 A DK567485 A DK 567485A DK 152478 C DK152478 C DK 152478C
Authority
DK
Denmark
Prior art keywords
circuit
delta
pct
channel
channels
Prior art date
Application number
DK567485A
Other languages
English (en)
Other versions
DK152478B (da
DK567485D0 (da
DK567485A (da
Inventor
Ole Sparkjaer
Original Assignee
Ole Sparkjaer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ole Sparkjaer filed Critical Ole Sparkjaer
Priority to DK567485A priority Critical patent/DK152478C/da
Publication of DK567485D0 publication Critical patent/DK567485D0/da
Publication of DK567485A publication Critical patent/DK567485A/da
Priority to AU67376/87A priority patent/AU6737687A/en
Priority to US07/090,978 priority patent/US4850021A/en
Priority to EP87900074A priority patent/EP0252102B1/en
Priority to DE8787900074T priority patent/DE3684470D1/de
Priority to PCT/DK1986/000131 priority patent/WO1987003771A1/en
Priority to AT87900074T priority patent/ATE73980T1/de
Priority to ZA869206A priority patent/ZA869206B/xx
Priority to NZ218535A priority patent/NZ218535A/xx
Priority to FI873406A priority patent/FI873406A7/fi
Priority to NO873288A priority patent/NO873288L/no
Publication of DK152478B publication Critical patent/DK152478B/da
Application granted granted Critical
Publication of DK152478C publication Critical patent/DK152478C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
  • Dc Digital Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Laminated Bodies (AREA)
  • Television Systems (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Analogue/Digital Conversion (AREA)
DK567485A 1985-12-06 1985-12-06 Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal DK152478C (da)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DK567485A DK152478C (da) 1985-12-06 1985-12-06 Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal
AT87900074T ATE73980T1 (de) 1985-12-06 1986-12-04 Verfahren und schaltung zur dekodierung von in form eines zweikanalsignals vorliegenden vierkanalsignalen.
PCT/DK1986/000131 WO1987003771A1 (en) 1985-12-06 1986-12-04 A method and a circuit for decoding four-channel signals which are coded in a matrix and available in the form of a two-channel signal
US07/090,978 US4850021A (en) 1985-12-06 1986-12-04 Method and a circuit for decoding four channel signals which are coded in a matrix and available in the form of a two-channel signal
EP87900074A EP0252102B1 (en) 1985-12-06 1986-12-04 A method and a circuit for decoding four-channel signals which are coded in a matrix and available in the form of a two-channel signal
DE8787900074T DE3684470D1 (de) 1985-12-06 1986-12-04 Verfahren und schaltung zur dekodierung von in form eines zweikanalsignals vorliegenden vierkanalsignalen.
AU67376/87A AU6737687A (en) 1985-12-06 1986-12-04 A method and a circuit for decoding four-channel signals which are coded in a matrix and available in the form of a two-channel signal
ZA869206A ZA869206B (en) 1985-12-06 1986-12-05 A method and a circuit for decoding four channel signals which are coded in a matrix and available in the form of a two-channel signal
NZ218535A NZ218535A (en) 1985-12-06 1986-12-05 Circuit for providing four channel signals from stereo signals
FI873406A FI873406A7 (fi) 1985-12-06 1987-08-05 Foerfarande och krets foer dekodning av fyrkanalssignaler som aer kodade i en matris och foereligger i form av en tvaokanalssignal.
NO873288A NO873288L (no) 1985-12-06 1987-08-06 FremgangsmŸte og strŸmkrets for dekoding av fire kanaler som er matrisekodet og foreligger i form av to-kanalsignal.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK567485 1985-12-06
DK567485A DK152478C (da) 1985-12-06 1985-12-06 Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal

Publications (4)

Publication Number Publication Date
DK567485D0 DK567485D0 (da) 1985-12-06
DK567485A DK567485A (da) 1986-10-09
DK152478B DK152478B (da) 1988-02-29
DK152478C true DK152478C (da) 1988-07-25

Family

ID=8144388

Family Applications (1)

Application Number Title Priority Date Filing Date
DK567485A DK152478C (da) 1985-12-06 1985-12-06 Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal

Country Status (11)

Country Link
US (1) US4850021A (da)
EP (1) EP0252102B1 (da)
AT (1) ATE73980T1 (da)
AU (1) AU6737687A (da)
DE (1) DE3684470D1 (da)
DK (1) DK152478C (da)
FI (1) FI873406A7 (da)
NO (1) NO873288L (da)
NZ (1) NZ218535A (da)
WO (1) WO1987003771A1 (da)
ZA (1) ZA869206B (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68921899T2 (de) * 1988-01-06 1995-09-21 Lucasarts Entertainment Co Räumliches Schallwiedergabesystem.
CA1301074C (en) * 1988-11-21 1992-05-19 Timothy Holl Video sound
JP4478220B2 (ja) 1997-05-29 2010-06-09 ソニー株式会社 音場補正回路
JP3324525B2 (ja) * 1998-10-01 2002-09-17 株式会社村田製作所 ３ｄウーハ駆動回路
CN115116459B (zh) * 2021-03-22 2024-10-01 炬芯科技股份有限公司 差分环绕音频信号生成方法、装置、存储介质及电子设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147321B1 (da) * 1971-06-21 1976-12-14
JPS5251764Y2 (da) * 1972-10-13 1977-11-25
GB1522135A (en) * 1974-08-29 1978-08-23 Dolby Laboratories Inc Stereophonic sound system
GB1522599A (en) * 1974-11-16 1978-08-23 Dolby Laboratories Inc Centre channel derivation for stereophonic cinema sound
GB2006583B (en) * 1977-10-14 1982-04-28 Dolby Lab Licensing Corp Multi-channel sound systems
US4612663A (en) * 1984-03-26 1986-09-16 Holbrook Kyle A Multichannel audio reproduction system

Also Published As

Publication number Publication date
ATE73980T1 (de) 1992-04-15
EP0252102A1 (en) 1988-01-13
NO873288D0 (no) 1987-08-06
FI873406A0 (fi) 1987-08-05
AU6737687A (en) 1987-06-30
DK152478B (da) 1988-02-29
NO873288L (no) 1987-08-06
WO1987003771A1 (en) 1987-06-18
EP0252102B1 (en) 1992-03-18
DE3684470D1 (de) 1992-04-23
US4850021A (en) 1989-07-18
NZ218535A (en) 1989-04-26
DK567485D0 (da) 1985-12-06
ZA869206B (en) 1987-10-28
FI873406A7 (fi) 1987-08-05
DK567485A (da) 1986-10-09

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